Abstract In this work, we demonstrate that highly antibacterially active triazole betaine chitosan (TBC) component can be incorporated into succinyl chitosan sodium salt (SC-Na) matrix by simple mixing to afford quite compact and uniform films. Blending of SC-Na and TBC improves tensile strength and simultaneously diminishes oxygen and water vapor permeability of the formed blend films. These improvements are most pronounced for blend films with SC-Na:TBC ratio 1:1. Test applications of the blend films as food coatings for bananas reduced their weight loss, vitamin C loss, and respiration rate, and this resulted in a significantly extended shelf life of the coated bananas. Moreover, the prepared blend films are non-toxic since they are composed of non-toxic SC-Na and TBC. Finally, we demonstrate that the incorporation of TBC into the SC-Na matrix dramatically enhances the antibacterial activity of the blend coatings with a high TBC fraction (50 % and higher) and these results are among the best reported in the field of antibacterial films so far.

中文翻译：

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基于琥珀酰壳聚糖和三唑甜菜碱壳聚糖衍生物混合物的活性抗菌食品涂料

摘要 在这项工作中，我们证明了具有高抗菌活性的三唑甜菜碱壳聚糖 (TBC) 组分可以通过简单混合掺入琥珀酰壳聚糖钠盐 (SC-Na) 基质中，以提供非常紧凑和均匀的薄膜。SC-Na 和 TBC 的共混提高了拉伸强度，同时降低了形成的共混膜的氧气和水蒸气渗透率。对于 SC-Na:TBC 比率为 1:1 的共混薄膜，这些改进最为明显。混合薄膜作为香蕉食品涂层的测试应用减少了它们的重量损失、维生素 C 损失和呼吸率，这导致涂层香蕉的保质期显着延长。此外，制备的共混膜是无毒的，因为它们由无毒的 SC-Na 和 TBC 组成。最后，